Mehmet C. Oz, MD, is the author (with Michael F. Roizen) of such New York Times bestselling books as YOU: The Owner's Manual, YOU: Staying Young, YOU: Being Beautiful, and YOU: On a Diet, and the health expert of The Oprah Winfrey Show. He is professor and vice-chairman of surgery at New York Presbyterian Columbia University and the medical director of the Integrated Medicine Center and the director of the Heart Institute. Read his exclusive Amazon guest review of Who's Got Your Back:

So many of us are caught in a constant tug-of-war between work and wellness. Keith Ferrazzi’s Who’s Got Your Back offers a strategy to execute on your most ambitious plans without costing your happiness, well-being, or sanity--in fact his program promises to enhance them by building deeper, more supportive relationships. Ferrazzi offers a nine-step approach to building what he calls “lifeline relationships,” an inner circle of deep, trusting peer support partners who serve as advisors, cheerleaders, and accountability watchdogs. These are more than colleagues, more than friends--they are true, caring comrades in arms who respect you enough to tell you like it is. The gem of this program is that Keith pays attention to the mechanisms that have been proven to make change stick--a striking difference between most self-help programs and Ferrazzi’s signature “let others help.” What’s more, with Who’s Got Your Back you’ll create relationships that are meaningful well beyond your shared success--a rare and welcome gift in the world of professional development.